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G450: both monitors flash
I just bought a new (to me, I think) Matrox G450. I installed it in my
computer, plugged two monitors into it and started up the computer. Both of my monitors started flashing and then eventually just went black. The computer kept booting, but I couldn't see anything on the screen. I turned off the computer, plugged my main monitor back into my old built-in video card and booted up. Nothing on the screen, but windows booted. I removed the matrox card and started the computer again, and everything worked fine, except I wasn't using my brand new video card I paid big bucks for (well, not really that big -- but they were bucks!) Did I do something wrong. Do I have to do something to make this thing work? Help, please! |
#2
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G450: both monitors flash
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#4
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G450: both monitors flash
Stephen Howard wrote:
On 29 Jun 2006 09:59:51 -0700, wrote: I just bought a new (to me, I think) Matrox G450. I installed it in my computer, plugged two monitors into it and started up the computer. Both of my monitors started flashing and then eventually just went black. The computer kept booting, but I couldn't see anything on the screen. I turned off the computer, plugged my main monitor back into my old built-in video card and booted up. Nothing on the screen, but windows booted. I removed the matrox card and started the computer again, and everything worked fine, except I wasn't using my brand new video card I paid big bucks for (well, not really that big -- but they were bucks!) As you were originally using the onboard graphics card, you may have to go into the bios and change the setting for which graphics adaptor the machine uses. On older motherboards this was sometimes controlled by a jumper on the motherboard. Sounds like what's happening is that the bios is telling the machine to use the onboard graphics adaptor...and when you plug the Matrox in you have nothing connected to the onboard VGA socket. Well, I've disabled the onboard card within windows, and my BIOS is already set to go to AGP and PCI first (it's an agp card.) It seems to be recognizing the card, because my onboard video no longer works once the new one is installed. And... when I hit "DELETE" as I'm booting up, with the new card installed, the whitish/grey flashing screen turns to green, which is the color of my BIOS screen. So it seems to be "working" but just not showing me what's on the screen. Can this be the sign of a defective card? Or just a defective installer (me.) |
#5
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G450: both monitors flash
On 9 Jul 2006 06:36:51 -0700, wrote:
Stephen Howard wrote: On 29 Jun 2006 09:59:51 -0700, wrote: I just bought a new (to me, I think) Matrox G450. I installed it in my computer, plugged two monitors into it and started up the computer. Both of my monitors started flashing and then eventually just went black. The computer kept booting, but I couldn't see anything on the screen. I turned off the computer, plugged my main monitor back into my old built-in video card and booted up. Nothing on the screen, but windows booted. I removed the matrox card and started the computer again, and everything worked fine, except I wasn't using my brand new video card I paid big bucks for (well, not really that big -- but they were bucks!) As you were originally using the onboard graphics card, you may have to go into the bios and change the setting for which graphics adaptor the machine uses. On older motherboards this was sometimes controlled by a jumper on the motherboard. Sounds like what's happening is that the bios is telling the machine to use the onboard graphics adaptor...and when you plug the Matrox in you have nothing connected to the onboard VGA socket. Well, I've disabled the onboard card within windows, and my BIOS is already set to go to AGP and PCI first (it's an agp card.) Disabled within Windows? That won't have any effect on how the machine boots with the Matrox. Sounds like you have the right bios settings though... You might need to reset the computer's 'resources' - if the bios is assigning a resource that the card needs to another device then this could hang things up. There should be a setting in your bios that says something like 'Reset configuration data" It seems to be recognizing the card, because my onboard video no longer works once the new one is installed. And... when I hit "DELETE" as I'm booting up, with the new card installed, the whitish/grey flashing screen turns to green, which is the color of my BIOS screen. So it seems to be "working" but just not showing me what's on the screen. Can this be the sign of a defective card? Or just a defective installer (me.) I'm tempted to blame the card - but the only way to be really sure would be to pop a different card in and see if the same thing happens. If it does then it points to a problem with the bois/moboard settings. Regards, -- Stephen Howard - Woodwind repairs & period restorations www.shwoodwind.co.uk Emails to: showard{whoisat}shwoodwind{dot}co{dot}uk |
#6
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G450: both monitors flash
Stephen Howard wrote:
On 9 Jul 2006 06:36:51 -0700, wrote: Stephen Howard wrote: On 29 Jun 2006 09:59:51 -0700, wrote: I just bought a new (to me, I think) Matrox G450. I installed it in my computer, plugged two monitors into it and started up the computer. Both of my monitors started flashing and then eventually just went black. The computer kept booting, but I couldn't see anything on the screen. I turned off the computer, plugged my main monitor back into my old built-in video card and booted up. Nothing on the screen, but windows booted. I removed the matrox card and started the computer again, and everything worked fine, except I wasn't using my brand new video card I paid big bucks for (well, not really that big -- but they were bucks!) As you were originally using the onboard graphics card, you may have to go into the bios and change the setting for which graphics adaptor the machine uses. On older motherboards this was sometimes controlled by a jumper on the motherboard. Sounds like what's happening is that the bios is telling the machine to use the onboard graphics adaptor...and when you plug the Matrox in you have nothing connected to the onboard VGA socket. Well, I've disabled the onboard card within windows, and my BIOS is already set to go to AGP and PCI first (it's an agp card.) Disabled within Windows? That won't have any effect on how the machine boots with the Matrox. Sounds like you have the right bios settings though... You might need to reset the computer's 'resources' - if the bios is assigning a resource that the card needs to another device then this could hang things up. There should be a setting in your bios that says something like 'Reset configuration data" It seems to be recognizing the card, because my onboard video no longer works once the new one is installed. And... when I hit "DELETE" as I'm booting up, with the new card installed, the whitish/grey flashing screen turns to green, which is the color of my BIOS screen. So it seems to be "working" but just not showing me what's on the screen. Can this be the sign of a defective card? Or just a defective installer (me.) I'm tempted to blame the card - but the only way to be really sure would be to pop a different card in and see if the same thing happens. If it does then it points to a problem with the bois/moboard settings. OK... so I did the following: 1. "Enabled" Reset Configuration Data in my BIOS and rebooted. = Result: No change, same flashing screen that goes blank. 2. Tried another card in the same slot. = Result: Other card works fine in that slot. 3. Tried the Matrox in another computer = Result: Same flashing screen that goes blank as I had on the original computer. My conclusion: card is bad. Just before I email the ebayer who sold it to me, I'd like your expert opinion. What do you think? |
#7
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G450: both monitors flash
On 11 Jul 2006 13:20:03 -0700, wrote:
snip OK... so I did the following: 1. "Enabled" Reset Configuration Data in my BIOS and rebooted. = Result: No change, same flashing screen that goes blank. 2. Tried another card in the same slot. = Result: Other card works fine in that slot. 3. Tried the Matrox in another computer = Result: Same flashing screen that goes blank as I had on the original computer. My conclusion: card is bad. Just before I email the ebayer who sold it to me, I'd like your expert opinion. What do you think? I'm no expert...but if I'd done all you've done and still ended up with a blank screen then I'd see no reason why it wasn't safe to assume the card was defective. I can't see that either of us have missed any critical points, or overlooked anything obvious. The only other possibility is that both motherboards have agp slots that are incompatible with the G450 - but as the 450 works on 1,2 and 4x agp at 3.3 or 1.5v, I wouldn't have thought you could be so unlucky as to find two boards it wouldn't work with. Does the bios have an AGP speed setting? Some boards, although fitted with a 4/8x agp slot, had problems running the 450 unless the agp slot was manually set to 1x. If you have such a setting in your bios I suppose it's always worth tweaking it and seeing what happens - but I suspect that the card's had it. Regards, -- Stephen Howard - Woodwind repairs & period restorations www.shwoodwind.co.uk Emails to: showard{whoisat}shwoodwind{dot}co{dot}uk |
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